/*******************************************************************************
 * Copyright (c) 2007, Geophysical Center RAS
 * Sergey Berezin, Dmitry Voitsekhovskiy
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms,
 * with or without modification, are permitted provided
 * that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * - Neither the name of the Geophysical Center RAS nor the names
 * of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ******************************************************************************/
using System;
using System.Collections.Generic;
using System.Text;

namespace DAI.ClientToolkit
{
    public class DataService
    {
        private DataServiceStub _ds;
        private string _version;
        private Dictionary<string, DataServiceResource> _dsr;

        public DataService(string Url)
        {
            _ds = new DataServiceStub(Url);
            _ds.Url = Url;
            _version = _ds.getVersion();
            string[] dsr = _ds.listResources(null);
            _dsr = new Dictionary<string, DataServiceResource>(dsr.Length);
            foreach (string s in dsr)
            {
                _dsr.Add(s, null);
            }
        }
        public string Version
        {
            get { return _version; }
        }

        public string[] Resources
        {
            get
            {
                string[] result = new string[_dsr.Count];
                _dsr.Keys.CopyTo(result, 0);
                return result;
            }
        }
        public bool HasResource(string r)
        {
            return _dsr.ContainsKey(r);
        }
        public DataServiceResource DataServiceResource(string name)
        {
            DataServiceResource result;
            if (_dsr.TryGetValue(name, out result))
            {
                if (result == null)
                {
                    DataServiceStub dsr_stub = new DataServiceStub(_ds.Url + "/DAI" + name);
                    result = new DataServiceResource(dsr_stub);
                    _dsr[name] = result;
                }
            }
            else
                throw new ArgumentException("No such DataServiceResource");
            return result;
        }
        public string Url { get { return _ds.Url; } }
    }
}
